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Task/Five-weekends/Lasso/five-weekends.lasso

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+local(
+	months		= array(1, 3, 5, 7, 8, 10, 12),
+	fivemonths	= array,
+	emptyears	= array,
+	checkdate	= date,
+	countyear
+)
+
+#checkdate -> day = 1
+
+loop(-from = 1900, -to = 2100) => {
+
+	#countyear = false
+
+	#checkdate -> year = loop_count
+
+	with month in #months
+	do {
+		#checkdate -> month = #month
+		if(#checkdate -> dayofweek == 6) => {
+			#countyear = true
+			#fivemonths -> insert(#checkdate -> format(`YYYY MMM`))
+		}
+	}
+
+	if(not #countyear) => {
+		#emptyears -> insert(loop_count)
+	}
+
+}
+local(
+	monthcount	= #fivemonths -> size,
+	output		= 'Total number of months ' + #monthcount + '<br /> Starting five months '
+)
+
+loop(5) => {
+	#output -> append(#fivemonths -> get(loop_count) + ', ')
+}
+
+#output -> append('<br /> Ending five months ')
+
+loop(-from = #monthcount - 5, -to = #monthcount) => {
+	#output -> append(#fivemonths -> get(loop_count) + ', ')
+}
+
+#output -> append('<br /> Years with no five weekend months ' + #emptyears -> size + '<br />')
+
+with year in #emptyears do {
+	#output -> append(#year + ', ')
+}
+
+#output